e3c3b33ea7
* Change graceful to use a singleton obtained through GetManager instead of a global. * Graceful: Make TestPullRequests shutdownable * Graceful: Make the cron tasks graceful * Graceful: AddTestPullRequest run in graceful ctx * Graceful: SyncMirrors shutdown * Graceful: SetDefaultContext for Xorm to be HammerContext * Avoid starting graceful for migrate commands and checkout * Graceful: DeliverHooks now can be shutdown * Fix multiple syncing errors in modules/sync/UniqueQueue & Make UniqueQueue closable * Begin the process of making the repo indexer shutdown gracefully
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